- contains wrap no drop out IF
12 signalfile with new actual audiocodec

-please order by e- mail and call out
the invoice number from the Measuring CD You haves already got. If the
source of supply was the attachment of the book "DRM-
Empfangspraxis", we consist on verification of the book purchase.

-Without verification of the source of
supply no single sale of the measuring file update !

Universal downmixer unit from 455 KHz
or 10,7 MHz to 12
KHz (input of a PC- soundcard), designed for modification of
existing AM- broadcast receivers to be able of DRM- receiving by use of
the softwaredecoder from Fraunhofer
Institut für Integrierte Schaltungen or other
softwaredecoders. Dimensions of the board 20x20x6,5mm.Oscillatorfrequenzy
eligible 467 KHz,
443 KHz or 10,712 MHz. Power supply 7
to 20V. Current consumtion < 6 mA . Optional crystal
467oder 443 KHz instead of LC; then 8,5mm high.

LC- Mixer fo tunable 443 - 480 KHz

use
for IF from 450 to 468 kHz, stabile enough for indoor operation. For
outdoor operation the crystal version is recommended.

Click

25,-

Crystal Mixer
fo=467KHz

use for IF exact 455 kHz

50,-

Crystal mixer
fo=462 KHz use for IF exact 450
kHz

like foto
above
new !

50,-

Crystal mixer
fo=10,712 MHz use for IF exact
10,7 MHz

like foto
above

58,58

Ceramic Filter
CFW 455 F 5
Pins; 10 kHz BW

Keramikfilter
CFW 455 F 5 Beine; 10 kHz BW

4,31

DRM-
Measuring- Transmitter Mixer

Generates a crystal stabil 10,7 MHz
DRM- signal from 12 kHz DRM- baseband (soundcard output). Output level
until -20 dBm at 50 Ohm.With our
measuring file at measuring CD the RF- S/N gets more than 30 dB.
So You are able to measure Your receiver performance.The mirror- sinal
at 10,724 MHz is not supressed and not inverted. The 10,7 MHz signal is
inverted. Dimensions of the board: 20mm x 20mm

You want to adapt the tuning algorithm or
want to create a customer own, please ask for well commented sources of
our tuning software. This could be helpful in fast implementation of
customer specific systems. N

DRM-DiscovererNow
the latest version of DRM- Discoverer from Carsten Knuetter tunes
the DRT1. So You can tune comfortable out of a transmitter table
also by use of the Fraunhofer Softwareradio and all other software, that
is not able to tune the DRT1. Also a easy step- tuning (1, 5,9 or 10
kHz steps) is suported ( I use this together with DReaM in the AM-
Mode).

SDRADIOby I2PHD and IK2CZL,
practic skin, made for für I/Q direct mixing concepts, demodulates also
by set an offset of middle frequency to 12 kHz single 12 KHz IF
very well. SSB, CW and AM demodulator.

BKPCSDR50A
by
G8JCF, good AM, best SSB and CW demodulator, also software AGC. Several
filter and noise reduction equipment. Also recorder mode supported.New ! Latest version supports DRT1
tuning by mouse wheel and also optional shaft encoder !

for free

AOR7030/DRMBy recomendations of the
Fraunhofer Institut für Integrierte Schaltungen modificated
AOR7030, the "High End"- device for DRM- receiving, also used
by proffessional customers. In addition we carry out a finetuning of the
1st crystal filter. A typical response over all, reached by finetuning,
You can see here.
10 KHz to 30 MHz; Intermodulation- free dynamic range 104 dB;
Blocking +14dBm; Noise floor -123dBm; ICP3 >+30dBm . With 12 KHz IF-
output and 2 pieces additional ceramic filters . Comes only from
us including documented bandwidth plot of all 6 filter banks and backup
floppy disk of S-meter calibration data.

1399.-

DRM-
Demonstrator

Miniatur low power DRM Transmitter
for fair and demonstration

+10 dBm true rms DRM RF power

approx. 0dBm to +6 dBm
true rms DRM radiation power

more than 50m transmitting radius
(at free frequency)

customer wanted fixed crystal
frequency (range 10 -27 MHz)

including matched 1,2 m
carbon whip antenna

12 KHz baseband input (baseband
from PC soundcard)

12V @ 100 mA DC power
required

Attention !
Refer to the laws of Your country, in some countrys also for 1mW
radiation power a transmitting licence is needed !

.

585,-

DRM- Modification
Instructions for several receiver, by use of our Mixer -
Units .

Positiv tested, if not other noted
!

Thanks all for the spade- work !

Send us the istruction or a link to,
if You have a new receiver modification !

Grundig Yacht
boy 400 At 2 of 3 tested receivers:
Bad decoder S/N by peaks in phase noise of the LO. This gets to
breaks in decoding, also by hardware blocking of the IF- counter- DAFC.
Even though the IF- spectrum looks good.

Digital Broadcast below 30 MHz is to hear with
simple home brewed circuits. The book describes the home brewing and
the use and modification of existing receivers. For newcomers
also for secialists. Be inquisitive ! German language. Including
DRM- measuring signal CD with previous audio codec. Update to actual
audio codec see above start position of this page.

Long and short time measurement of
fieldstrength values in dBµV/m 15 KHz to 1000 MHz

High accuracy, better than +- 2dB
absolute lower 30 MHz,

Several detector types- average,
peak and quasi- peak

Several measuring bandwides

Also mobile measurement in Europa

Exellent documentation with time
zoom under "Next Viev NT"

ask

for

Measurement of
sensitivity of radios with ferrite aerial, also EMR measurement

TEM cell is balanced to ground and
well calibrated

Fieldstrength from 10 dBµV/m to
more than 140dBµV/m

Frequency Range 100 KHz to 50 MHz

Accuracy better than +-2 dB,
typical +- 1 dB lower 30 MHz

Other receiver measurements like
intermodulation distortion, bandwide curves, AGC curves and more
available

ask

for

Development of
rf devices, prototyping and factory of low series

short development and prototyping
time

also double sided SMD -boards

we use the modernst components

new drm- receiver with
USB-soundchip on board in development!

ask

for

We are also
able to design, adapt or repair antenna coupling networks for transmitter up to
250KW

for pretuning we use our new network
analyser
Agilent Technology 8714

problems with transmitter
intermodulation or diplexer carrier suppression ? We will carry out a
suppressor for You !

ask

for

Ordering and
Payment Informations:

To order send us
an e-mail with the delivery adress. Companys, located in EU have
to call out the VAT- Number. You will get a before- hand invoice
including shipping costs and payment variants via e-mail back.
When the invoice-
value is added to our account the delivery starts by
German Post.

Payment by
Credit Card is also possible. Bank transfere is more costly ! We
accept American Express , Eurocard/ Mastercard and VISA. If You
want to pay by creditcard, we will send You a mail order formular
by e- mail. Print it, compleate it and send it back by fax.
Normaly the shipping startts at day of fax receiving. Please
respect that we do not accept the receiving of Your credit card
informations by www because risc of security.

*
If the recipient
is not able to prove a VAT- number (private person), the tax of 19% comes in addition to the prices (only EU).For the handling
of the customs-matter and the customs-charge the recipient is
incumbent upon (only if there is one in Your country ).